योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-41, verse-48

क्षिप्रमेव नदीवाहो वित्प्रवाहस्तथैव च ।
आवर्तान्तरसंमिश्रो यथावर्तः प्रवर्तते ॥ ४८ ॥

kṣiprameva nadīvāho vitpravāhastathaiva ca ,
āvartāntarasaṃmiśro yathāvartaḥ pravartate 48

48. kṣipram eva nadīvāhaḥ vitpravāhaḥ tathā eva ca
āvartāntarasaṃmiśraḥ yathā āvartaḥ pravartate

48. yathā nadīvāhaḥ kṣipram eva pravartate tathā eva ca
vitpravāhaḥ āvartāntarasaṃmiśraḥ yathā āvartaḥ pravartate

48. Just as a river's current flows swiftly, mixing with internal eddies, so too does the stream of consciousness (vit) manifest, characterized by inner whirls, just as a whirlpool operates.

Words meanings summery:

• क्षिप्रम् (kṣipram) - swiftly (quickly, swiftly, rapidly)

• एव (eva) - indeed, just (indeed, only, certainly, just)

• नदीवाहः (nadīvāhaḥ) - river's current (flow of a river, river current)

• वित्प्रवाहः (vitpravāhaḥ) - stream of consciousness (vit) (flow of knowledge, stream of consciousness)

• तथा (tathā) - similarly (similarly, thus, so)

• एव (eva) - indeed, just (indeed, only, certainly, just)

• च (ca) - and (and, also, moreover)

• आवर्तान्तरसंमिश्रः (āvartāntarasaṁmiśraḥ) - mixed with internal eddies (mixed with internal whirlpools/eddies)

• यथा (yathā) - just as (just as, as, according to)

• आवर्तः (āvartaḥ) - whirlpool (whirlpool, eddy, current)

• प्रवर्तते (pravartate) - functions, manifests (flows, proceeds, acts, functions, exists)

Words meanings and morphology

क्षिप्रम् (kṣipram) - swiftly (quickly, swiftly, rapidly)

(indeclinable)

Note: Adverbial usage, derived from neuter singular accusative of adjective kṣipra.

एव (eva) - indeed, just (indeed, only, certainly, just)

(indeclinable)

Note: Emphatic particle.

नदीवाहः (nadīvāhaḥ) - river's current (flow of a river, river current)

(noun)

Nominative, masculine, singular of nadīvāha

nadīvāha - river current, stream of a river

Compound type : tatpuruṣa (nadī+vāha)

• nadī – river
  noun (feminine)
• vāha – flow, current, carrying
  noun (masculine)
  Derived from root vah (to carry)
  Root: vah (class 1)

वित्प्रवाहः (vitpravāhaḥ) - stream of consciousness (vit) (flow of knowledge, stream of consciousness)

(noun)

Nominative, masculine, singular of vitpravāha

vitpravāha - flow of knowledge/consciousness

Compound type : tatpuruṣa (vit+pravāha)

• vit – knowledge, consciousness
  noun (feminine)
  From root vid (to know)
  Root: vid (class 2)
• pravāha – flow, current, stream
  noun (masculine)
  From pra + vah
  Prefix: pra
  Root: vah (class 1)

तथा (tathā) - similarly (similarly, thus, so)

(indeclinable)

एव (eva) - indeed, just (indeed, only, certainly, just)

(indeclinable)

Note: Emphatic particle.

च (ca) - and (and, also, moreover)

(indeclinable)

Note: Conjunction.

आवर्तान्तरसंमिश्रः (āvartāntarasaṁmiśraḥ) - mixed with internal eddies (mixed with internal whirlpools/eddies)

(adjective)

Nominative, masculine, singular of āvartāntarasaṃmiśra

āvartāntarasaṁmiśra - mixed with inner whirls/eddies

Compound type : tatpuruṣa (āvarta+antara+saṃmiśra)

• āvarta – whirlpool, eddy, circle
  noun (masculine)
  From ā + vṛt
  Prefix: ā
  Root: vṛt (class 1)
• antara – internal, inner, interval, inside
  adjective (neuter)
• saṃmiśra – mixed, mingled, combined
  adjective (masculine)
  Past Passive Participle
  Formed from sam + miśr (to mix)
  Prefix: sam
  Root: miśr (class 10)

Note: Qualifies vitpravāhaḥ or nadīvāhaḥ.

यथा (yathā) - just as (just as, as, according to)

(indeclinable)

आवर्तः (āvartaḥ) - whirlpool (whirlpool, eddy, current)

(noun)

Nominative, masculine, singular of āvarta

āvarta - whirlpool, eddy, circling, turning

From ā + vṛt

Prefix: ā

Root: vṛt (class 1)

प्रवर्तते (pravartate) - functions, manifests (flows, proceeds, acts, functions, exists)

(verb)

3rd person , singular, middle, present (laṭ) of pravṛt

Present tense, Middle voice, 3rd person singular

From pra + vṛt

Prefix: pra

Root: vṛt (class 1)